Device for converting motion



(No ModeE) A. H. KIRK 8: W. J. FENDER.

DEVICE FOR GONVERTING' MOTION. No. 302,265. Patented July 22, 1884.

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UNTTED STATES Parent @rrrcie.

ALVA H.,KIRK AND \VILLIAM J. FENDER, OF MINNEAPOLIS, MINNESOTA.

DEVICE FOR CONVERTING MOTION.

BPECIFICATION forming part of Letters Patent No. 302,265, dated July 22,1884.

Application filed Juno 9. 1854.

(No model.)

T at whom it may concern.-

Be it known that we, ALVA H. KIRK and WILLIAM J FENDER, citizens of theUnited States, residing at Minneapolis, in the county of TIennepin andState of Minnesota, have invented certain new and useful Improvements inMechanism for Converting Rotary into Re ciprocating Motion, of which thefollowing is a specification.

Our invention relates to improvements in mechanism for converting rotaryinto reciprocating motion; and the object of the invention is to providesimple and durable devices for effecting such conversion of motion. Thisobject is attained by means of the mechanical devices illustrated in theaccompanying drawings, in which Figure 1 represents a broken side view,

partly in section, of the half-length of a middlings-purifier, showingthe bolting-cloth, the brushes for cleaning the cloth, and ourmechanical devices for reciprocating the brushes. Fig. 2 is a transverseview of Fig. 1, showing only the devices for converting and impartingthe motion; and Fig. 3 is a modification of the improvements.

The object in showing the improvements as applied to amiddlings-purifier is to illustrate one practical application of theinvention toa useful purpose, and it is not thereby intended to limitthe scope of the invention to the use of the improvements in connectionwith that class of machinery, nor to the particular form of constructionshown in connection with such machinery.

In applying the invention to a middlingspurifier, two sets ofsprocket-wheels and two endless chains are used, as shown. They may beplaced transversely in the machine instead of lengthwise, as shown.

In the drawings, A represents a boltingcloth secured in the same machinein the usual manner.

a a are brushes or other cloth-cleaning de-' vices, which are secured onthe reciprocating frame B.

c c are transverse shafts, freely revolving in proper bearings attachedto the sides of the machine by brackets d, or any other wellknown means.The shaft 0 is located at or near the center of the length of themachine,

and extends entirely across and outside thereof at one or both sides, sothatadrivingpulley or pulleys to revolve the shaft may be attached toit. The shafts c are short shafts located near one end of the machine,and. are made to revolve in proper bearings upon or attached to thebrackets d. I

O C are pairs of sprocket wheels fast upon the shafts c c, andequidistant from the longitudinal centers of the brush-carriers. Theymay be placed near such centers, as shown in the drawings, or at ornearthe ends of the brush-carriers.

D D are endless chains around the sprocketwheels 0 C, the open links ofwhich take over the projecting teeth of the sprocket-wheels, and aremade to travel in the direction shown in Fig. 1 by arrows.

b is a rod secured at each of its ends to the endless chains D D and atright angles thereto.

0 is a downwardlyprojecting lug from the reciprocating frame B, and isof suitable length to reciprocate over the shaft 0 without touching it.

e is another downward1y-projecting lug, located in therear of the lug eand at or near the end of the reciprocating frame, and extending downbelow the line of the lower peripheries of the sprocket-wheels.

Theparts being thus constructed and arranged, motion may be given theshaft 0 and the sprocket-wheels put in revolution, causing the endlesschains to travel in the directions shown by arrows in Fig. 1. Thecrossbar b will engage the lug c and force it forward,

along with the reciprocating frame 13 and the cloth-cleaning devices a athereon, until the lug e passes slightly beyond the sprocket wheels onthe shaft 0, and the bar b ceases to engage the lug e and passes aroundto the bottom of the sprocket-wheels. The reciprocating frame B will fora moment remain at rest while the bar bis passing from the lug 6 aroundthe sprocket-wheels, and until the bar engages, in its return movement,the longer lug e, by means of which the frame 13 is carried back to theplace of starting. This operation is indioatedby dotted lines in Fig. 1.The lugs e 6 being arranged centrally, and the shafts c 0 being shortand not extending to the center, as shown in Fig. 2, enables the lug eto reciprocate between these shafts; and the distance between the lugs eand 6 being greater than half the diameter of the sprocket-wheels on theshaft the lug 6 does not quite reach that shaft in the forwardreciprocation. By placing the shaft 0 at the middle of the machine,asdescribed, and having the reciprocating frame but half the length of themachine, a recipro cation of the frame or brush-carriers the full lengthof'the throw will carry the brush or cleaning device a to the extremeend of the bolting-cloth and machine, while the brush a is made toreciprocate to the point from which the brush astarted. Thus the wholelength of the bolting-cloth is operated upon by the cleaning devices.

Instead of employing two endless chains and two sets of sprocket-wheels,as described, it is desirable for many uses of the invention to employbut one chain and one pair of sprocketwheels. In such construction theshaft of the forward sprocket-wheel, or that which the lug 6 must pass,is secured on the side opposite the lugs, and does not pass through farenough to interfere with the longer lug.

The arrangement of the parts may be as shown in Fig. 3. Thesprocket-wheels 0, end

lesschain D, and lugs e and e are the same as heretofore described; butinstead of the bar I) for engaging the lugs there is substituted the rodor pin a, or other suitable projection, secured to the chain D,andextending outward on the side on which the lugs are to travel far enoughto engage them.

The parts to be reciprocated may be arranged to travel partly beyondeither or both sprocket-wheels; or by placing them directly over thelugs they may be made to travel only over the distance between thesprocket-wheels.

Having fully described our invention, what we desire to claim and secureby Letters Patent 1's- 1. The combination, with the devices for cleaningthe bolting-cloth of a middlingspurifier shaker, of the mechanismdescribed for reciprocating them, consisting of the sprocketwheels 0 O,endless chains DD, lugs e and e, and rod 6, substantially as and for thepurpose set forth.

2. The combination of sprocket-wheels O O, shafts 0 o, endless chains DD, lugs e and e, and rod b, when arranged for converting rotary intoreciprocating motion.

3. The mechanism, constructed substantially as set forth, for convertingrotary into reciprocating motion, consisting of sprocket-wheels, thelugs c and e, and an endless chain or chains over thesp1"ocket\vl1eels,and bearing a rod or projection for engaging saidlugs.

ALVA H. KIRK.

\VILLIAM J. FENDER.

XVitnesses:

HOWE PAIGE, J. F. OoL oM.

